From d94be4e314590c263cd3d5ac78d8218e6b0546d2 Mon Sep 17 00:00:00 2001 From: Moinak Ghosh Date: Thu, 27 Sep 2012 23:16:13 +0530 Subject: [PATCH] Update Changelog and bump version to 0.8.5. --- Changelog | 17 +++++++++++++++++ pcompress.h | 2 +- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/Changelog b/Changelog index 7ff7fc7..bcd1682 100644 --- a/Changelog +++ b/Changelog @@ -1,3 +1,20 @@ +== 0.8.5 Update Release == +Update adaptive mode heuristic based on algorithms. +Remove incorrect check in PPMd decompression code. +Speed up adaptive modes by using heuristics to select compression algorithm. +Select similarity percentage based on dedupe block size for effectiveness. +Fix check for size reduction in dedupe. +Fix polynomial table computation. +Change hashing and length bias to reduce hashtable bucket collisions. +Add support for user-selectable 60% or 40% similarity for Delta Compression. +Overall slight speedup. +Rewrite core dedupe logic to simplify code and improve performance. +Hashtable based chunk-level deduplication instead of Quicksort. +Fix a corner case bug in Dedupe decompression. +Speed up Hash computation for dedupe blocks. +Add support for Fixed-Block deduplication. +Reduce dedupe loop checks for slight speed edge. +Implement K-min-values Sketch for Similarity detection. == 0.8.1 Bugfix Release == Fix return code handling in LZP pre-compression, crashed adaptive modes. Allow user-specified minimum Dedupe block size. diff --git a/pcompress.h b/pcompress.h index b3f01c5..46df9e1 100644 --- a/pcompress.h +++ b/pcompress.h @@ -41,7 +41,7 @@ extern "C" { #define FLAG_DEDUP 1 #define FLAG_DEDUP_FIXED 1 #define FLAG_SINGLE_CHUNK 2 -#define UTILITY_VERSION "0.8.1" +#define UTILITY_VERSION "0.8.5" #define COMPRESSED 1 #define UNCOMPRESSED 0